Acyl compounds of cyanhydrins of the etio-cholane and etio-allocholane series and a method of producing the same



Patented Nov. 15, 1938 V I 2,136,401

UNITED STATES PATENT. OFFICE ACYL COllflOUNDS OF CYANHYDRINS OF THE ET'IO GHOLANE AND ETIO-ALLO- CHOLANE SERIES AND A METHOD OF' PRODUCING THE SAME Lothar Strassberger, Berlin-Wilmersdorf, Germany, assignor to. Schering-Kahlbaum A; G., Berlin, Germany, a corporation of Germany No Drawing. Application February 27, 1937, Se-

rial No. 128,138. In'Germany MarchZ, 1936 9 Claims. (01 260-397) This invention relates to acyl compounds of Ewamplcz cyanhydrins of compounds of the etio-cholane and etio-allo-cholane series and a method of 5 gram-S of androstenolone acetate cyanhydnn producing the 58mm aretreated as described in Example 1. There I The process for the manufacture of cyanhy is thus obta1ned the same androstenolone cyan- 5 drins is described in the copending application hydrin diaceta'te" v Serial No. 58,754 and consists in bringing satu- Example 3 rated or unsaturated etio-cholanones or etioallocholanones into reaction with hydrocyanic gram of trans-androsterone cyanhydrin is acid treated according to Example lwith 3 cos. of

According tothe invention, these cyanhydrins acetic anhydride. There is obtained the correby treatment with such substances which serve Sponding (1134061581176 in a y eld of about 75% 0f the as reagents on alcoholic hydroxyl groups and thus theoryform esters, as, for example, acid anhydrides, Instead ofacetic ydr d s the a ylatacid chlorides, cyanic acid, its isomers and des n s n be emp y for p rivatives, such as phenyl isocyanate and the like, Zoyl chloride, p pi ni i nh succinic are converted into the corresponding acyl deacid yd d nd-the like. rivatives, which in contradistinction to the cyan- A150 the IeaCtioIl is 1101? limited the y hydrins are characterized by great stability, hydrins of the androstenolone compounds. Thus The new acyl compounds ar lik i i t d in addition, for example, androstenolones and to find application as intermediate products for also their esters and ethers or their other derivathe manufacture of substances of high physiologitiVeS with Converted y y groups, in which cal activity. these hydroxyl groups can easily be restored by The reaction may, for example, be illustrated hydrolysis, can be p y as Starti materials. in detail by the following scheme for the cyan- Also among other things it may be of advantage hydrin of androstenolone acetate: to treat the cyanhydrins with such acylating 0113 ON CH3 N OH 000011, l/ CH3 CH3 +oH3oo o omooo- CHSCO/ o CHsCO The following examples illustrate the invenagents as form mixed esters of the diol comtion: pounds, that is to say therefore as starting ma- Exampze 1 terials such esters are employed, the acid radical 40 of which is different from the: acid radical em- 5 grams of androstenolone cyanhydrin are ployed for the acylation. The reaction can be heated with 30 cc. of acetic anhydride first for carried out by customary methods as is known one hour to 100-110 C. and thereupon for a furfor acylations; thus, the process can be conducted ther hour to 130-140 C. The excess of acetic in the presence of solvents, catalysts and the like. anhydride is distilled off in vacuum, and the The term cholanone as employed herein emresidue recrystallized from methanol. There is braces not only the saturated but also the nuclearthus obtained the androstenolone cyanhydrin di- 1y unsaturated compounds.

acetate in the form of colorless crystals of M. P. Of course, many changes and variations in the 210 C. reaction conditions, the agents used and the like may be employed by those skilled in the art in accordance with the principles set forth herein and in the claims annexed hereto.

What I claim is:

1. Process for the manufacture of acyl compounds of cyanhydrins of the etio-cholane and etio-allo-cholane series, wherein the cyanhydrins are treated with such substances as will react on tertiary alcoholic hydroxyl groups and thereby form esters.

2. Process as claimed in claim 1, in which the starting material comprises a cyanhydrin of a member of the group consisting of androstenolone and its derivatives, wherein the hydroxyl group has been substituted by a group which can be replaced by the hydroxyl group.

3. Process as claimed in claim 1 in which the esterifying agent is a member of the group consisting of acid anhydrides, acid chlorides, and cyanic acid, its isomers and derivatives, including phenyl-isocyanate.

4. Process for the manufacture of acyl compounds of cyanhydrins of the etio-cholane and etio-allo-cholane series, which comprises reacting a cyanhydrin of the etio-cholane and etioallo-cholane series With an acylating agent in the presence of a solvent and of a catalyst.

5. An acyl compound of the cyanhydrins of the etio-cholane and etio-allo-cholane series having the general formula CmI-IMOAc) (CN) X, wherein n indicates 2'? or 29, X a group that, upon hydrolysis, is reconvertible into the hydroxy group and is in the 3-position and Ac an acyl group.

6. An acyl compound of the cyanhydrin of the etio-cholane and etio-allo-cholane series having the general formula C19I-I29(OA0) (CN) X, and the structural formula wherein X indicates a group that, upon hydrolysis, is reconvertible into the hydroxy group and is in the 3-position, and Ac an acyl group.

7. An acyl compound of the cyanhydrin of the etio-cholane series having the general formula C19H27(OAc) (CN) X and the structural formula 5 wherein X indicates a group that, upon hydrolysis, is reconvertible into the hydroxy group and is in the 3-position, and Ac an acyl group.

8. A diacetyl compound of trans-androsterone cyanhydrin having the general formula 20 C19H29(O acety1)2(CN) and the structural formula a 30 CHaCOO- V 9. A diacetyl compound of androstenolone cyanhydrin having the general formula OCOCH:

LOTI-IAR S'I'RASSBERGER. 

